Tension device for shuttles



Sept; 24, 1929. J. RUSH TENSION DEVICE FOR SYHUTTLES Filed Jun 15, 1928 INVENTOR John Rush WITNESSES ATTORNEY Patented Sept. 24, 1929 UNETE!) STATES PATENT OFFICE JOHN nnsn, or NORWICHL coNNEoTIeU'r, ASSIGNOR are THE SCHWARZENBACH- HUBER COMPANY, or UNroN CETY, NEW JERSEY, A oonrona'rron or New JERSEY TENSION DEVICE FOR SHUTTLES Application filed June 13.

This invention relates to a tension device for shuttles, and has for an object to provide an improved constructioin wherein the shut-- tle may be quickly threaded either automatically or by hand and maintained in threaded position while remaining under tension.

Another object of the invention is to provide a tension device for shuttles, wherein the tensioning member may be varied for regulating the tension.

A further object of the invention is to provide in a tension device for shuttles, a thread guide having guiding eyes and formed to be readily removed whenever desired.

In the accompanying erawings Figure 1 is a perspective view of one end of a shuttle showing in connection therewith a tension device embodying the invention;

Figure 2 is an enlarged side view of the tension device shown in Figure 1, the same being shown removed from the shuttle;

Figure 3 is a bottom plan view of the tension device shown in Figure 2;

Figure 4; is a front view of the tension device shown in Figure 2;

Figure 5 is a perspective view of a slightly modified form of guide to that shown in Figure 2;

Figure 6 is view similar to Figure 5, but showing a further modified form of the invention;

Figure 7 is a side view of a slightly modified term of guide to that shown in Figure 2;

Figure 8 is a side view of a slightly modi lied form of the invention to that shown in Figure 6;

Figure 9 is a perspective view on an enlarged scale of the guide shown in Figure 2.

Referring to the accompanying drawing by numerals 1 indicates the body of the shuttle and 2 an ordinary cop. The thread or yarn 8 from the cop 2 extends longitudinally of the shuttle through the tension device 1 and finally out through the guiding eye 5. When threading the tension device 4, the yarn is moved first to the dotted position 6 and then swung to the right, as shown in Figure 1. As the yarn moves to the right it will pass downwardly into the groove 7 and finally into the 1928. Serial No. 285,175.

eye 5. \Vhile the yarn is moving in this path it will also move into the tension guide 18. as hereinafter fully described. The tension device 4 is formed with a body 9 having a curved guiding top 10 with a depending portion 11 which slightly overlaps the upstanding flange 12 from the base 13 of body 9. The base 13, flange 12 and members 10 and 11 together with the body 9 and associated parts form a passageway 14; through which the yarn 3 extends when the device is in use. The depending portion 11 is spaced slightly from the flange 12 so that when the yarn is pulled to the dotted position indicated by 6 in F igure 1 and then to the full line position through opening 5, the thread will pass over the curved surface 15 and between member 11 and flange 12 so as to move into the passageway 1t. As the yarn moves through the slot or passageway 7 it is turned at right angles and strikes the guiding web 16 which guides it downwardly and into the eye 1'? of the tension guide 18. The web 16 is preferably an integral part of member 10 but extends to a point in contact with the central web or plate 19 0t guide 18. Guide 18, as shown in Figure 9. formed from one piece of metal so that the portion 20 is solid and is provided with a threaded socket or aperture 21 for receiving the screw 22, whereby the guide 18 is firmly clamped in position to member 10 and in contact with the guiding weo 16. The tension guide 18 is provided with webs or plates 19 22 and 23 and each of these is formed with an eye 17. Each of the webs of the guide is provided with a rounded section 25 for guiding the thread into eye 17 and also with an inclined portion 26 which assists in guiding the thread into the eye. In operation the yarn passes back and forth through the eye 17 of the respective plates 19, and 23 and in the course of time wears these plates to an undesirable extent, so that the guide 18 must be removed. This may be easily done by op erating screw 22. A new one may be quickly and easily substituted and the tension device is then substantially in its original condition. A tension finger 27 is provided and formed substantially U-shaped. This finger is preterably from a small piece of wire and is looped at the outer end so that it will continually straddle plate 19 and also the guiding web or flange 16. The inner end of this finger is soldered or otherwise rigidly secured to an arm 28 which carries a hook 29 and which is rockably mounted on a screw 30. A resilient member 31 is connected with the hook 29 and with a screw 82, whereby the arm 28 and finger 27 and associated parts are normally maintained in the position shown in Figure 2. The resilient member 21 may be a spring, but preferably it is an ordinary rubber band with one end looped over the hook 29 and the other extending through an aperture in screw 32. hen a rubber band is used screw 32 is rotated more or less and the band put under more or less tension. lVhen the yarn is first passed through the slot 7 it will engage the upper surface of finger 27 and "force the same down to the dotted position shown in Figure 2. At this time the yarn will passinto all of the eyes 17 and as soon as the tension has been removed, finger 27 will quickly move upwariil- 1y to the position shown in Figure 2 and will carry with it loops of the yarn, so that the yarn will extend from the eye in plate 23 upwardly and over one of the legs of finger 27, downwardly through the eye of plate 19 and then upwardly over the other leg oi the finger 27 and finally down and out through the eye 17 of plate 22. By being looped in this manner the pull on the yarn as the shuttle moves will cause the finger 27 to be pulled downwardly against the action of the resilient member 31, and as soon as the tension has been relieved the finger 27 will move upwardly under the action of the resilient member 31. It will, of course, be evident that if the finger 27 moves upwardly and downwardly, substantially the same tension is maintained in the yarn while the yarn is allowed to be fed off of the cop 2. In Figure 5 will be seen a modified form showing a tension guide 18. This guide is identical in construction with the guide shown in Figure 9, except that the guiding web 16 is formed as an integral part of plate 19 and not as an integral part of the member 10. In Figure 6 a further form of the invention is shown wherein the guide 33 is identical with the guide 18 shown in Fig ure 5, except that guiding webs or flanges 34, 35 and 36 are formed integral with the re maining part of the guide. In Figure 8 sub stantially the same structure as shown in Figure 6 is disclosed, except that the guiding pon tion 25' is curled inwardly somewhat so as to prevent in a better manner any accidental unthreading of the yarn. In Figure 7 substantially the same structure is disclosed as is shown in Figure 9, except for the extension 25 which is curled in the same manner as extension 25 of Figure 8. The body 9 is provided with an extension 37 fitting into an aperture in the bottom of the shuttle 1, while the rounded extension 38 fits into the depression 39 of shuttle 1. A screw 40 is also provided and acts to lock the tension device 4 in substantially the position shown in Figure 1. lVhen any of the modified forms of the tension guides are used, except that shown in Figure 7, the web 16 must be removed from the device d. However, preferably either the form shown in Figure 7 or 9 is used, as this form may be removed from time to time without disturbing the web 16, which web practically does not wear as it is not engaged by the thread except when the thread or yarn is first inserted. By the arrangement of member 10 and associated parts the yarn may be threaded in the usual manner, and by the construction set forth, particularly that structure disclosed in Figure 2, a proper tension is secured at all times with the wearing parts easily renewable.

What I claim is 1. A tension device for shuttles, comprising a body formed with a guiding top, an upstanding fiange, a projection co-acting with said flange and associated parts forming a threaded passageway and a guiding web depending from the front part of the guiding top, a tension guide arranged adjacent said guiding web, said tension guide being formed with a plurality of slots and guiding eyes, a U- shaped finger positioned to extend through certain of said slots and straddle said guiding web, a swinging member for swingably supporting said finger, and tension means for resiliently holding said finger in a given position.

2. A tension device for shuttles, including a guiding web, a thread guide arranged adjacent the web provided with a plurality of guiding eyes and a plurality of slots, a tension finger extending through certain of said slots and beyond said guiding web, means for swingably supporting said finger, whereby when the thread moves over said web it will depress said finger until it enters said eyes, and resilient means acting on said finger for resiliently holding the finger and resiliently moving the finger to a position distant from said eyes.

3. A tension device for shuttles, including a removable tension device formed with a body, a plurality of plates depending from the body, said plat-es being spaced apart, means at one end of each of the plates forming an eye open at one point, and deflecting portions for guiding a thread into the eye and a swingable tension finger movable into and out of the space between said plates for varying the tension of the yarn carried by said eyes.

' at. A tension device for shuttles, including a tension guide for yarn, comprising a body having not less than three plates presenting a plurality of slots and an eye at the lower end of each ofthe plates, each of said eyes having an opening, and a substantially U- shaped swinging tension finger straddling the center of said plates and extending through the tension guide and resiliently held in one position so as to present a tortuous path for yarn passing over the finger and through said eyes, said finger yielding so as to swing in proportion to the tension of said yarn and thereby produce the abruptness of the turns in said passageway.

5. A tension device for shuttles, including a yarn guide, a tension finger coacting with the yarn guide for maintaining the yarn under tension, a substantially L-shaped bracket, one end of said finger being secured to one leg of said L-shaped bracket, a supporting pin loosely extending through the other leg of said L-shaped bracket for rotatably supporting said bracket, and an elongated rubber member connected at one end to said finger near said bracket for resiliently holding the finger in a given position, said rubber member acting to normally swing said bracket and said finger to a retracted position.

6. A yarn tension device for shuttles, including a tension yarn guide having an eye near the lower end, means coacting with the upper part of the tension guide for guiding thread to said eye, a swingable tension member mounted to swing past said eye for inaintaining tension on the yarn passing through said eye, said t'ension member swinging in a plane at right angles to the eye of the tension guide, and resilient means for maintain ing said tension member resiliently in a given position.

7. A yarn tension device for shuttles, including a tension yarn guide having a plurality of aligned eyes, a web formed independently of the guide for guiding yarn to all of said eyes, a tension linger adapted to engage said thread and cause the same to move in such a path that the thread will be compelled to make a right angle turn when passing through the eyes, and means for maintaining said tension member resiliently under tension.

8. A tension device for a shuttle for maintaining tension on the yarn passing therethrough, including a yarn tension guide formed with a plurality of spaced plates and an eye in each plate, said eyes being aligned, a swinging tension finger formed from a looped piece of wire positioned to straddle one of said plates, and swinging past said eyes and resilient means for resiliently holding said finger in a given position.

9. A tension device for maintaining tension on the yarns passing from said shuttles, including a yarn tension guide, comprising a body formed with a plurality of spaced plates, each plate having an eye, with the eyes in alignment, one of said plates having an extending guide web for guiding the thread to said eyes.

10. A tension device for maintaining tension on the yarns passing from the shuttles, including a tension yarn guide provided with a body, and a plurality of parallel plates extending from the body, said plates having aligned eyes and extending webs positioned to guide a thread into said eyes.

11. A tension device for maintaining tension on the yarn passing from the shuttles, including a thread tension guide provided with a body having a plurality of parallel spaced plates extending therefrom, each 01 said plates having an eye, and said eyes being arranged in alignment, each plate being also provided with a curved portion near the upper part of the eye, and an inclined portion merging into the lower part of the eye, said portions acting to guide a thread into the eye, aswingable tension finger coacting with said guide for maintaining the yarn under tension as it leaves said guide, and a resilient member for resiliently holdng said finger in a given position.

12. In a tension device for shuttles, a yarn tension guide formed with a body having plurality of plates, said plates having aligned eyes, each plate being provided with an iiiclined portion merging into the lower part of the eye and an upper curled inwardly-extending finger for guiding a thread into the upper part of the eye.

13. In a tension device for shuttles, a yarn tension guide having a plate formed with an eye, and means for guiding a thread into the eye, a web coacting with said means for uiding a thread to the eye, a tension finger coacting with said plate and a resilient member for resiliently holding said tension finger in a given positon.

JOHN RUSH. 

